Fundraising Fox

Gross-Wen Technologies

Slater, US · Iowa corporation · 2 known investors

algae.com ↗

Gross-Wen Technologies (GWT) develops the patented RAB algae-based system to treat municipal and industrial wastewater, recovering nutrients from the water and recycling the nutrient-rich algae into slow-release fertilizer. The company serves municipal and industrial clients seeking sustainable wastewater treatment.

AgTechBiotechCircular EconomyCleantechClimate Techin /gross-wen-technologies-inc

Founders & leadership

MG
Martin GrossExecutive Officer, Director
DF
David FurbushExecutive Officer, Director
ZW
Zhiyou WenExecutive Officer, Director
DJ
Darren JarboeDirector
MG
Max GangestadChief Operating Officer30 Under 30 2025
DM
Dr. Martin GrossFounder and CEO
DZ
Dr. Zhiyou WenCo-founder
KR
Ken RubinPresident
PJ
Paul JufferChief Financial Officer
DT
David TakesDirector
NK
Nathan KatznerDirector
JZ
Joseph ZubackDirector

Investors · 2

ISA VenturesCedar Rapids · $25K – $1M
Next Level VenturesDes Moines · $500K – $5M

Reported raises · per SEC filings

Form D private placements
▶$1MraisedAug 2025 · 4 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • David FurbushExecutive Officer, Director
  • Joseph ZubackDirector
  • Nathan KatznerDirector
  • Martin GrossExecutive Officer, Director
  • David TakesDirector
Offering amount
$2M
Amount sold
$1M
First sale
Jun 2025
Incorporated
Corporation, Iowa
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$8MraisedJun 2025 · 19 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Martin GrossExecutive Officer, Director
  • David TakesDirector
  • David FurbushExecutive Officer, Director
  • Joseph ZubackDirector
  • Nathan KatznerDirector
Offering amount
$8M
Amount sold
$8M
First sale
Jun 2022
Incorporated
Corporation, Iowa
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$2.5MraisedJul 2021 · 3 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Martin GrossExecutive Officer, Director
  • David FurbushExecutive Officer, Director
  • David TakesDirector
  • Zhiyou WenExecutive Officer, Director
Offering amount
$2.5M
Amount sold
$2.5M
First sale
Jul 2021
Incorporated
Corporation, Iowa
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$2.3MraisedAug 2020 · 7 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • David TakesDirector
  • Zhiyou WenExecutive Officer, Director
  • Martin GrossExecutive Officer, Director
  • David FurbushExecutive Officer, Director
Offering amount
$5M
Amount sold
$2.3M
Minimum investment
$250K
First sale
Aug 2019
Incorporated
Corporation, Iowa
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$204KraisedMay 2020 · 2 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Martin GrossExecutive Officer, Director
  • David TakesDirector
  • Zhiyou WenExecutive Officer, Director
  • David FurbushExecutive Officer, Director
Offering amount
$204K
Amount sold
$204K
First sale
May 2020
Incorporated
Corporation, Iowa
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$2MraisedJun 2018 · 1 investors · Other Technology
Rule 506(c)
Officers, directors & promoters on the filing
  • David FurbushExecutive Officer, Director
  • Zhiyou WenExecutive Officer, Director
  • Martin GrossExecutive Officer, Director
  • Darren JarboeDirector
Offering amount
$2M
Amount sold
$2M
Minimum investment
$150.1K
First sale
Jun 2018
Incorporated
Corporation, Iowa
Federal exemptions
06c
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.